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Re: 120v AC theory question; metal-halide ballast
Posted to Technical Theory Forum on 11/26/2016

Lewis, the power factor is a reciprocal relationship. Power factor = 1, power company generates 1 watt for 1 watt device. Power factor .5 = 2 watts generated for the 1 watt device. Power factor = .25, power company generates 4 watts for the 1 watt device. Loui... Login to read more.